android - 带有联系人的自动完成 TextView

Question

我需要显示一个自动完成的文本框，它基本上会加载联系人电子邮件 ID。我已经使用自定义适配器尝试过它，但文本框中没有填充任何内容。完全没有建议。任何解决方案都会非常有用。

Answer 1

尝试以下操作:

ArrayList<String> emailAddressCollection = new ArrayList<String>();

ContentResolver cr = getContentResolver();

Cursor emailCur = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, null, null, null, null);

while (emailCur.moveToNext())
{
    String email = emailCur.getString(emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
            emailAddressCollection.add(email);
}
emailCur.close();

String[] emailAddresses = new String[emailAddressCollection.size()];
emailAddressCollection.toArray(emailAddresses);

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
             android.R.layout.simple_dropdown_item_1line, emailAddresses);
AutoCompleteTextView textView = (AutoCompleteTextView)findViewById(R.id.YOUR_TEXT_VIEW);
     textView.setAdapter(adapter);
 }

注意:不要忘记将 READ_CONTACTS 权限添加到您的 Manifest.xml 中:

<uses-permission android:name="android.permission.READ_CONTACTS" />